2003 Chevrolet Blazer Owner's Manual - Page 380

45,000Miles (75 000 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) 50,000 Miles (83 000 km) 0 If you haven't used your vehicle under severe 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) 0 Change automatic transmission fluid and filter if the conditions listed previously and, therefore, haven't changed your automatic transmission fluid, change both the fltiid and filter. Manual transmission fluid doesn't require change. 17 Automatic Transfer Case Only: Change transfer case fluid. 52,500 Miles (87 500 km) 0 Change engine oil and filter (or every 12 months, vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) U Rotate tires. See Tire Inspection and Rotation on page 5-58 for proper rotation pattern and additional information. (See footnote +.) If you do not use your vehicle underany of these conditions, change the fluidand filter every 50,000 miles (83 000 km). 0 Rotate tires. See Tire Inspection and Rotation on page 5-58 for proper rotation pattern and additional information. (See footnote +.) 6-2 1